www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2014 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You



Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

Reply
 
Thread Tools
Old October 31st, 2012, 07:49   #1
bhunt70
Newbie
 
Join Date: Jul 2009
Location: Virginia
TDI(s): none
Default Check Engine Light 2009 Jetta TDI

So my CEL came on a month or so ago. I took it to my local vw place to get them to run the codes, I had a coupon and it was free. I told them to let me know what the problem was since I was going to take it to one of the trusted mechs listed on this site.

The say it was my catalytic converter and replaced it free. Two days after I got it back the CEL came on again. Called up vw, they replaced a sensor free again. No problems until yesterday, the light came on again. Should I try vw again or try to find a mechanic that can correctly diagnose and fix the problem.

I only have 20k on the car, its my night and weekend car. I know I need to drive it more.
bhunt70 is offline   Reply With Quote
Old October 31st, 2012, 07:54   #2
jessabug
Veteran Member
 
jessabug's Avatar
 
Join Date: Jan 2012
Location: Cary, NC
Default

What are the actual codes that are coming up?
__________________
Hers: 2003 20thAE GTI, 3" 42DD turbo back, Unitronic Stage 2, 135k
His: 2001 Jetta TDI GL, auto->manual swapped, 150k
The old skool project: 1984 Jetta TD GL, 185k+, 2.5" exhaust, Giles IP
jessabug is offline   Reply With Quote
Old October 31st, 2012, 07:56   #3
bhunt70
Newbie
 
Join Date: Jul 2009
Location: Virginia
TDI(s): none
Default

I was never told, I'll check the paperwork when I get home but I'm pretty sure it's not listed. I assumed they were pointing to the problems they fixed at first, now not so much.
bhunt70 is offline   Reply With Quote
Old October 31st, 2012, 08:16   #4
JSWTDI09
Veteran Member
 
JSWTDI09's Avatar
 
Join Date: Jan 2009
Location: Las Vegas, Nevada
Default

A couple of points:

1) Find someone near you with VCDS and find out what the actual fault codes are. We can be more helpful then.
2) I would stick with a dealer as long as you are under warranty. However, you might want to see if you can find a dealer near you with a better service department. Many VW dealers have poor service departments, but not all of them.
3) Once your warranty is over, stay away from dealers, unless it is to buy parts (like wiper blades, etc.).
4) You need to take it out onto the highway and put some miles on it, at least occasionally. TDIs like to be driven and they have nothing against being driven hard. Exercise is good for your car just like it is good for you.

Quote:
Originally Posted by bhunt70 View Post
I was never told, I'll check the paperwork when I get home but I'm pretty sure it's not listed. I assumed they were pointing to the problems they fixed at first, now not so much.
If you are not told what the codes are - Ask what they are and demand an answer!

Have Fun!

Don
__________________
2009 Jetta SportWagen TDI
Candy White/Anthracite; Build date: 01/16/09; Buy date: 02/09/09
Coveted Three Pedal Version, Big hole in roof
Dieselgeek Shortshifter & Panzer Plate (my favorite & my smartest mods)
2MicronTech Pure Flow and Contain Flow CR fuel system modifications

Last edited by JSWTDI09; October 31st, 2012 at 08:18.
JSWTDI09 is offline   Reply With Quote
Old October 31st, 2012, 08:20   #5
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Default

We can't offer much help unless we know what DTC(s) caused the MIL to come on in the first place.

The exhaust system on that car is FAR more complex than just a "catalytic converter", so it is possible what they told you they replaced was actually something altogether different.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Old October 31st, 2012, 12:02   #6
Ol'Rattler
Veteran Member
 
Ol'Rattler's Avatar
 
Join Date: Jul 2007
Location: Marysville, Wa.
TDI(s): 2006 Jetta
Default

Some dealers don't really troubleshoot, they just throw parts at a problem until the problem goes away or your warranty runs out.

A DTC (code) doesn't magically tell you what part to change like some techs believe. A good tech will use a DTC as a place to start in diagnosing what the actual problem is.
__________________
2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
Euro Light Switch
2nd grocery hook
VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
Adjusted Cam to Crank Timing
Ol'Rattler is offline   Reply With Quote
Old October 31st, 2012, 14:21   #7
bhunt70
Newbie
 
Join Date: Jul 2009
Location: Virginia
TDI(s): none
Default

A code on the first of my invoices was P0420, catalyst efficiency below threshhold. They changed part 1K0-254-401 (catalyst) and 1K0-253-725 which was the clip.
The second they said "see previous history" and fixed my exhaust gas temp sensor because it shorted.

Last edited by bhunt70; October 31st, 2012 at 14:24.
bhunt70 is offline   Reply With Quote
Old October 31st, 2012, 15:47   #8
JSWTDI09
Veteran Member
 
JSWTDI09's Avatar
 
Join Date: Jan 2009
Location: Las Vegas, Nevada
Default

Quote:
Originally Posted by bhunt70 View Post
A code on the first of my invoices was P0420, catalyst efficiency below threshhold. They changed part 1K0-254-401 (catalyst) and 1K0-253-725 which was the clip.
The second they said "see previous history" and fixed my exhaust gas temp sensor because it shorted.
Very interesting. I checked several VW dealer's parts sites and they all agree that p/n 1K0-254-401 does not exist. The clip exists, but the catalyst does not. Are you sure you got that part number right?

Have Fun!

Don
__________________
2009 Jetta SportWagen TDI
Candy White/Anthracite; Build date: 01/16/09; Buy date: 02/09/09
Coveted Three Pedal Version, Big hole in roof
Dieselgeek Shortshifter & Panzer Plate (my favorite & my smartest mods)
2MicronTech Pure Flow and Contain Flow CR fuel system modifications
JSWTDI09 is offline   Reply With Quote
Old October 31st, 2012, 17:10   #9
bhunt70
Newbie
 
Join Date: Jul 2009
Location: Virginia
TDI(s): none
Default



If this picture works those are the two codes. If not, I think I got the numbers right but maybe I put O instead of 0. Or vice-versa.
bhunt70 is offline   Reply With Quote
Old October 31st, 2012, 17:27   #10
Joe_Meehan
Veteran Member
 
Joe_Meehan's Avatar
 
Join Date: Sep 2005
Location: Ohio USA
Fuel Economy: mid-upper 40's city upper 50's - low 60's Highway
Default

Quote:
Originally Posted by bhunt70 View Post


If this picture works those are the two codes. If not, I think I got the numbers right but maybe I put O instead of 0. Or vice-versa.

Note the code should be in the format of PXXX where XXX are numbers 0-9.
__________________
Joe Meehan
2002 NB Silver Ohio BAA HUM
Joe_Meehan is offline   Reply With Quote
Old October 31st, 2012, 20:01   #11
bhunt70
Newbie
 
Join Date: Jul 2009
Location: Virginia
TDI(s): none
Default

Yeah sorry, I said codes but meant part #'s.

I'm taking it back in tomorrow afternoon.
bhunt70 is offline   Reply With Quote
Old November 1st, 2012, 04:15   #12
tdiatlast
Veteran Member
 
Join Date: Jan 2009
Location: Fort Worth, Texas
Default

09? I thought the cat convertor/exhaust/DPF was all one unit?

OP: Please put your year/model in your signature...I see it's in the thread title, but it's easier to reference if it's in your sig....
__________________
2014 Passat TDI SEL DSG, White, Cornsilk, built 1/2014, purchased March 22, 2014
2009 JSW TDI DSG, Reflex Silver, Anthracite vinyl, built 11/2008, FrostHeater installed at 800miles purchased Jan 18, 2009
tdiatlast is offline   Reply With Quote
Old November 4th, 2012, 15:20   #13
Joe_Meehan
Veteran Member
 
Joe_Meehan's Avatar
 
Join Date: Sep 2005
Location: Ohio USA
Fuel Economy: mid-upper 40's city upper 50's - low 60's Highway
Default

That CEL (check engine light) is just a kid in class waving her hand trying to get you attention because she has the answer. You need to have the codes read. Some places will read them for FREE. Try Autozone or Advanced Auto Parts. Get the exact code (like P0123) not just their translation into English and post it back here.
__________________
Joe Meehan
2002 NB Silver Ohio BAA HUM
Joe_Meehan is offline   Reply With Quote
Old November 4th, 2012, 16:09   #14
JSWTDI09
Veteran Member
 
JSWTDI09's Avatar
 
Join Date: Jan 2009
Location: Las Vegas, Nevada
Default

Quote:
Originally Posted by tdiatlast View Post
09? I thought the cat convertor/exhaust/DPF was all one unit?
In the '09 models the DOC (Diesel Oxidation Catalyst) and the DPF are one unit, but this is not the only catalyst. There is also the NOx Storage Catalyst and the H2S catalytic converter. These last 2 are downstream from the DOC/DPF unit (under the car). Therefore, there are actually three "catalytic converters" in our cars. We have no idea which "catalyst" they replaced or what sensor they replaced. This mystery will continue until we either see DTCs or correct part numbers of the parts replaced. Of course, the parts replaced so far have (apparently) not yet fixed the actual problem, so the story continues....

Have Fun!

Don
__________________
2009 Jetta SportWagen TDI
Candy White/Anthracite; Build date: 01/16/09; Buy date: 02/09/09
Coveted Three Pedal Version, Big hole in roof
Dieselgeek Shortshifter & Panzer Plate (my favorite & my smartest mods)
2MicronTech Pure Flow and Contain Flow CR fuel system modifications
JSWTDI09 is offline   Reply With Quote
Old November 4th, 2012, 17:28   #15
yakko
Veteran Member
 
yakko's Avatar
 
Join Date: Mar 2010
Location: Wappingers Falls, NY
TDI(s): PASSAT 96,97
Fuel Economy: 43 - 44
Default

Wow, I hope your waranty is nice and long! I could see if it was high milage.

Randy
yakko is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Particulate filter Icon, Glow plug indicator flashing, check engine light, 2009 tdi Sideways240sx VW MKV-A5 Golf/Jettas 40 July 28th, 2013 07:02
2009 Check Engine Light - P048C Stibz VW MKV-A5 Golf/Jettas 26 August 17th, 2010 11:46
2010 Jetta TDI Check Engine Light is on again! alreadyBenBrott VW MKV-A5 Golf/Jettas 10 April 22nd, 2010 08:18
2010 Jetta TDI Check Engine Light is on again! alreadyBenBrott VW MKV-A5 Golf/Jettas 0 April 17th, 2010 23:01
help please on 2000 jetta tdi Recuring check engine light shanefoshia VW MKIV-A4 TDIs (VE and PD) 7 January 5th, 2008 20:12


All times are GMT -7. The time now is 01:17.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2014
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2013, All Rights Reserved
Page generated in 0.14574 seconds with 12 queries
[Output: 127.64 Kb. compressed to 106.01 Kb. by saving 21.63 Kb. (16.95%)]